US1388107A - Exhaust-silencer - Google Patents

Exhaust-silencer Download PDF

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Publication number
US1388107A
US1388107A US316904A US31690419A US1388107A US 1388107 A US1388107 A US 1388107A US 316904 A US316904 A US 316904A US 31690419 A US31690419 A US 31690419A US 1388107 A US1388107 A US 1388107A
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United States
Prior art keywords
exhaust
helix
silencer
central bore
pitch
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Expired - Lifetime
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US316904A
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Ernst Johann
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Individual
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Priority to US316904A priority Critical patent/US1388107A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels

Definitions

  • the exhaust gases flowing through said helix are set in whirling motion and find an effective resistance on the bulbed walls of the helix, which is the greatest at the middle of the latter, where the pitch of the helix is very low and the central bore rather small, while the admission as well as the escape of the exhaust-gases is facilitated by the pitch of the helix as well as its central bore being gradually increased toward its inlet and outlet ends.
  • the exhaust-gases receive, moreover, different kinds of movement during their way through the latter.
  • silencer are so determined that the exhaust is still audible with a low speed of the motor, for controlling the proper working of the latter, while with a high speed a perfect silencing is obtained.
  • Figure 1 is a central section through the improved exhaust-silencer, While Fig. 2 is an endview of one half of the same.
  • the arrow 1 indicates the admissiorrorifice of. the exhaust-silencer; 2 designates the open-ended casing of the same of doublecone shape which consists of two parts screwed together; 3, 4, 5, 6, 7, 8, 9, 10 are the single threads of the helix cone shape with increasing pitch toward both ends and which are bulbed on the side facing the outlet-orifice of the casing; 11, 12, 13, 14 indicate the central bore through the helix, and comically increased toward both ends.
  • An exhaust-silencer comprising, in comcone shape and a correspondingly shaped elix therein of a bulb formation on the side facing its outlet-end and of a pitch increasing from its middle toward both ends, said helix having a central bore therein which is cylindrical in its middle and conically increased toward both ends, substantially as and for the purpose set forth.

Description

J. ERNST.
EXHAUST SlLENCER.
APPLlCATlON FILED AUGJl, 19x9.
III/1,1 5
{MA- MW Patented Aug. 16, 1921.
UNITED STATES PATENT OFFICE.
J'OHANN ERNST, OF PADERBORN, GERMANY.
EXHAUST-SILENCE.
the side facing its outlet-end, further of double-cone shape, thirdly of a pitch increasing from its middle toward both ends,
and fourthlyl with a central bore whichiscylindrical in its middle and conically increased toward both ends.
Thereby, the exhaust gases flowing through said helix are set in whirling motion and find an effective resistance on the bulbed walls of the helix, which is the greatest at the middle of the latter, where the pitch of the helix is very low and the central bore rather small, while the admission as well as the escape of the exhaust-gases is facilitated by the pitch of the helix as well as its central bore being gradually increased toward its inlet and outlet ends. ()wing to the double-cone shape of the helix and the different areas between the single threads of the helix, the exhaust-gases receive, moreover, different kinds of movement during their way through the latter. By theparticular design of helix, dead angles are avoided and a settling-down of the products of combustion does not take place@ The dimensions ofthe improved exhaustbination,
Specification of Letters Patent. Patented Aug. 16, 1921. Application filed August n, 1919. Serial No. 316,904.
silencer are so determined that the exhaust is still audible with a low speed of the motor, for controlling the proper working of the latter, while with a high speed a perfect silencing is obtained.
In the accompanying drawing: Figure 1 is a central section through the improved exhaust-silencer, While Fig. 2 is an endview of one half of the same.
The arrow 1 indicates the admissiorrorifice of. the exhaust-silencer; 2 designates the open-ended casing of the same of doublecone shape which consists of two parts screwed together; 3, 4, 5, 6, 7, 8, 9, 10 are the single threads of the helix cone shape with increasing pitch toward both ends and which are bulbed on the side facing the outlet-orifice of the casing; 11, 12, 13, 14 indicate the central bore through the helix, and comically increased toward both ends.
What I claim, is An exhaust-silencer, comprising, in comcone shape and a correspondingly shaped elix therein of a bulb formation on the side facing its outlet-end and of a pitch increasing from its middle toward both ends, said helix having a central bore therein which is cylindrical in its middle and conically increased toward both ends, substantially as and for the purpose set forth.
In testimony whereof I have hereunto set my hand in the presence of two subscribing wltnesses.
JOHANN ERNST. Witnesses:
THEopon Buns, HANS LANG.
which is cylindrical in its middle an open-ended casing of double-
US316904A 1919-08-11 1919-08-11 Exhaust-silencer Expired - Lifetime US1388107A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303143A (en) * 1980-01-28 1981-12-01 Mitsuko Leith Exhaust gas control system
US4339918A (en) * 1980-09-11 1982-07-20 Hirokuni Michikawa Means for accelerating the discharge of exhaust gas from an internal combustion engine
US4530418A (en) * 1982-06-01 1985-07-23 Currie Neil L Automotive exhaust system
US4683978A (en) * 1984-11-22 1987-08-04 Tula Silencers (Propriety) Limited Exhaust silencer
US6796403B1 (en) * 2001-08-31 2004-09-28 James C. Laughlin Exhaust system baffling apparatus
US20050029040A1 (en) * 2001-08-31 2005-02-10 Laughlin James C. Exhaust system baffling apparatus
US7726444B1 (en) 2001-08-31 2010-06-01 Laughlin James C Exhaust system baffle apparatus
GB2622445A (en) * 2022-09-19 2024-03-20 Pravinchandra Budhdeo Shamir Asymmetric biconical expansion chamber device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303143A (en) * 1980-01-28 1981-12-01 Mitsuko Leith Exhaust gas control system
US4339918A (en) * 1980-09-11 1982-07-20 Hirokuni Michikawa Means for accelerating the discharge of exhaust gas from an internal combustion engine
US4530418A (en) * 1982-06-01 1985-07-23 Currie Neil L Automotive exhaust system
US4683978A (en) * 1984-11-22 1987-08-04 Tula Silencers (Propriety) Limited Exhaust silencer
US6796403B1 (en) * 2001-08-31 2004-09-28 James C. Laughlin Exhaust system baffling apparatus
US20050029040A1 (en) * 2001-08-31 2005-02-10 Laughlin James C. Exhaust system baffling apparatus
US7374017B2 (en) * 2001-08-31 2008-05-20 Laughlin James C Exhaust system baffling apparatus
US7726444B1 (en) 2001-08-31 2010-06-01 Laughlin James C Exhaust system baffle apparatus
GB2622445A (en) * 2022-09-19 2024-03-20 Pravinchandra Budhdeo Shamir Asymmetric biconical expansion chamber device

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